程序代码:

<script type="text/javascript">

function Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc) {

this.Url = sUrl;

this.QueryString = sQueryString;

this.XmlHttp = this.createXMLHttpRequest();

if (this.XmlHttp == null) {

alert("erro");

return;

}

var objxml = this.XmlHttp;

objxml.onreadystatechange = function (){Ajax.handleStateChange(objxml,sRecvTyp,oResultFunc)};

}

Ajax.prototype.createXMLHttpRequest = function() {

try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}

try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}

try { return new XMLHttpRequest(); } catch(e) {}

return null;

}

Ajax.prototype.createQueryString = function () {

var queryString = this.QueryString;

return queryString;

}

Ajax.prototype.get = function () {

sUrl = this.Url;

var queryString = sUrl+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString();

this.XmlHttp.open("GET",queryString,true);

this.XmlHttp.send(null);

}

Ajax.prototype.post = function() {

sUrl = this.Url;

var sUrl = sUrl + "?timeStamp=" + new Date().getTime();

var queryString = this.createQueryString();

this.XmlHttp.open("POST",sUrl,true);

this.XmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

this.XmlHttp.send(queryString);

}

Ajax.handleStateChange = function (XmlHttp,sRecvTyp,oResultFunc) {

if (XmlHttp.readyState == 4) {

if (XmlHttp.status == 200) {

oResultFunc(sRecvTyp?XmlHttp.responseXML:XmlHttp.responseText);

} else {

alert("您所请求的页面有异常。");

}

}

}

</script>

使用方法:

<script type="text/javascript">

var classAjax = new Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc);

classAjax.post();//post方式发送数据

classAjax.get();//get方式发送数据

//sUrl发送地址

//sRecvTyp 接受数据类型:0为xml 1为text

//oResultFunc 返回结果处理函数

</script>

应用实例：

<script type="text/javascript">

var ajax1 = new Ajax("1.asp",0,"id="+id,bacal);

ajax1.post();

function bacal(rexm){

//返回数据处理函数;

}

</script>